During his career he won three Grand Slam singles titles; Wimbledon in 1907 and 1914 (the first non-British born individual to do so) and the Australasian Championships in 1911.

The Australian Open men's singles trophy, the Norman Brookes Challenge Cup, is named in his honour.

[6] On leaving school, he went to work as a clerk at Australian Paper Mills, where his father was managing director, and was on the board himself within eight years.

In 1907 Brookes became the first non-British player and the first left-hander to win the men's singles title at Wimbledon after a straight sets victory in the final against 39-year old Arthur Gore.

During these years he also skipped most Australasian Championships with the exception of the 1911 edition which was held in his hometown Melbourne and which he won in the final against Horace Rice.

In May 1914 he won the singles title at the Surrey Lawn Championships in Surbiton, defeating Gordon Lowe in the final in five sets.

[16][17] His wife, Mabel, Lady Brookes was made a Dame Commander of the Order of the British Empire (DBE) in 1955 for "charitable and social welfare services.